Ventilating stbtrctttbe



F. M. COBB.-

VENTFLATING STRUCTURE.

APPLICATION min Mn. 1a. una.

1,317,960. Patented oct. 7,1919. n

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F. M. COBB.

VENTILATING STRUCTURE.

APPLICATION meu Mu. 1a. 1919.

Patented oet. 7,1919.y

2 SHEETS-SHEET 2 WITNESS 'I'HE COLUMBIA Purmmur'n FRANK. M'. COBB, OF CEARVILLE, NEW JERSEY.

VENTILATING STRUCTURE.

Specification of Letters Patent.

Patented Oct. 7, 19,19.A

Application filed January 13, 1919. Serial No. 270,973.

To all whom t may concer-n:

Be it yknown that I, FRANK M, COBB, a citizen of the United States, residing at Cedarville, in the county of Cumber and and State of New Jersey, have invented eertain4 new and useful Improvements in Ventilating Structures, of which the following 1s n specification.

One object of my invention is to provide a Ventilating structure which will be par ticularly adapted for use in the roofs of green houses and which can be easily and qu i ckl y operated.

Another object is to make my invention of a simple and durable construction.

A still further object is to provide means on the Ventilating structure which Wil-l serve as a guard to hold the structure in place and prevent injury thereto in ease of high Wind pressure.

These objects, and other advantageous ends which will be hereinafter described, I attain in the following manner, reference being had to the accompanying drawings in Which- Figure l is a transverse sectional elevation of a green house having my improved ventllating structure applied thereto,

Fig. 2 is a fragmentary plan view of Fig. 1, and

Fig. 3 is an inverted plan view illustrat ing certain features of my invention.

Referring to the drawings, 4 represents a green house having a roof 5 Which includes longitudinally extending beams 6 and 7 spaced apart. The beam 6 is beveled on its under face as shown at 8 and the beam 7 is beveled on its upper face as shown at 9.

Standards 10 form a support for a shaft 11 upon which is journaled a transom 12, said transom being glazed, as shown at 13. The opposite edges 14 and 15 of the transom frame 16 are beveled in opposite directions, as clearly shown in Fig. l, and these beveled portions are adapted to engage the beveled surfaces 8 and 9 when the transom is closed. The transom frame 16 has angular plates 17 and 18 which are adapted to engage other angular plates 19 and 20, re spectively, on the beams 6 and 7.

Arcuate brackets 21 have their opposite ends secured to the transom frame 16 at each side of the axis of the shaft 11, said axis forming the center of curvature for the arcuate brackets 21. These brackets 21` between their ends, are provided with rows.

of gear teeth 22 Which are in mesh with gear Wheels 23 fixed to a rotatable operating shaft 24, said shaft having bearings in the standards 10.

Segmental or arcuate guard strips 25 are secured at their opposite ends to the arcuate brackets 21 at both sides of the teeth 22. The segmental guard strips, as illustrated, are curved in an are concentric with the axis of the shaft l1 and are spaced from the respective brackets 21 so as to extend under the shaft 24. Thus, the shaft 24 by boing' interposed between the brackets 21 and guard strips 25 serves as additional means for confining the transom with its brackets and guards to a rotatable movement With the axis of the shaft 11 as a center. Itwill be also noted that if the transom is opened and a high Wind pressure arises that the shaft 24 Will be engaged by the guard stri s 25 and thereby prevent the loosening of t e parts from their mounting.

Each of the guard strips 25, as clearly shown in Fig. 3, has tvvo substantially parallcl ortions 26 and 27 so as to span the opposite sides of each of the gear Wheels 23. Thus, the guards 25 serve to keep the teeth 22 of the brackets 21 in proper alinement and mesh with the gear Wheels 28.

The shaft 24 can be rotated by any suitable means and I have illustrated a sheave pulley 28 over which is mounted an endless chain 29 Which extends downwardly Within reach of a person so that by turning the shaft 24 the transom can be rocked on the shaft 1l so as to move the transom into a closed position and to engage the beveled surfaces 14 and 15 with the surfaces 8 and 9 and also engage the angular strips 17 and 19 and 18 and 20 to form a complete seal, By arranging the angular beveled portions, a continuous Water shed Will be produced to prevent leakage of rain into the interior of the building.

The transom 16 can be made of any convenient length and, if desired, the entire length of the roof structure can be provided with one or more of said transoms.

Transom structure made in accordance with my invention can be easily operated and is of a substantial nature since all the parts are eonned in a predetermined position.

While I have described my invention as taking a particular form, it will be understood that the various parts of my invention may be changed without departing from the s irit thereof, and hence I do not limit myse f to the precise construction set forth, but consider that I am at liberty to make such changes and alterations as fairly come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A structure of the character described includin a pivoted transom havin an arcuate brac et secured thereto, sai bracket having gear teeth thereon; an operating shaft; a gear Wheel secured to said shaft and in mesh with said gear teeth on the bracket; and an independent guard strip looped around said shaft and having both of its ends secured to said bracket; substantially as described.

2. A structure of the character described includin a pivoted transom havin an arcuate brac et secured thereto, sait bracket having gear teeth thereon; an operating shaft; a gear wheel on said shaft in mesh with the teeth of said bracket; and a guard movable in conjunction with said transom and confining said shaft between it and said bracket; substantially as described.

3. A structure of the character described including a pivotcd transom having an arcuate bracket secured thereto, said bracket having gear teeth thereon; an operating shaft; a gear wheel on said shaft in mesh with the teeth of said bracket; and a guard movable in conjunction with said transom and confining said shaft between it and said bracket; said guard having portions spanning the sides of said gear wheel; substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FRANK M. COBB.

Witnesses MARY A. INGLAR, CHAs. E. Po'rrs.

Copies o! this patent may be obtained for ve cents each, by addressing the Commissioner of Patents. Washington, 2D. 0. 

